<template>
  <div>
    <nav-bar>
      <div slot="left" class='back' @click="backClick">
        <img src="~assets/img/common/back.svg" alt=''>
      </div>
      <div slot="center" class='titles'>
        <div class='titles-item' 
             v-for="(item,index) in tiltes"  :key='item.index'
             :class='{active:index==currentIndex}'
             @click="titleClick(index)">{{item}}</div>
      </div>
    </nav-bar>
  </div>
</template>
<script>
import NavBar from 'components/common/navbar/NavBar';
export default {
  name: 'DeatailNarBar',
  components: {
    NavBar
  },
  data() {
    return {
      tiltes: ['商品','参数','评论','推荐'],
      currentIndex: 0
    }
  },
  methods: {
    titleClick(index) {
      this.currentIndex = index
      this.$emit('titleClick',index)
    },
    backClick() {
      this.$router.back()
    }
  }
}
</script>
<style scoped>
  .titles {
    display: flex;
    font-size: 13px;
  }
  .titles-item {
    flex: 1
  }
  .active {
    color: var(--color-high-text)
  }
  .back {
    margin-top: 7px;
  }

</style>